GB579735A - Improvements in electrical resistors comprising a ceramic support and wire wound thereon - Google Patents

Improvements in electrical resistors comprising a ceramic support and wire wound thereon

Info

Publication number
GB579735A
GB579735A GB920042A GB920042A GB579735A GB 579735 A GB579735 A GB 579735A GB 920042 A GB920042 A GB 920042A GB 920042 A GB920042 A GB 920042A GB 579735 A GB579735 A GB 579735A
Authority
GB
United Kingdom
Prior art keywords
enamel
oxide
ceramic
per cent
wire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB920042A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EXPRESS LIFT CO Ltd
LANCELOT ERNEST WILLIAM WELLS
Original Assignee
EXPRESS LIFT CO Ltd
LANCELOT ERNEST WILLIAM WELLS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EXPRESS LIFT CO Ltd, LANCELOT ERNEST WILLIAM WELLS filed Critical EXPRESS LIFT CO Ltd
Priority to GB920042A priority Critical patent/GB579735A/en
Publication of GB579735A publication Critical patent/GB579735A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/02—Housing; Enclosing; Embedding; Filling the housing or enclosure
    • H01C1/034—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath
    • H01C1/036—Housing; Enclosing; Embedding; Filling the housing or enclosure the housing or enclosure being formed as coating or mould without outer sheath on wound resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/08—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances quartz; glass; glass wool; slag wool; vitreous enamels
    • H01B3/088—Shaping of glass or deposition of glass
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C17/00—Apparatus or processes specially adapted for manufacturing resistors
    • H01C17/06—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base
    • H01C17/065—Apparatus or processes specially adapted for manufacturing resistors adapted for coating resistive material on a base by thick film techniques, e.g. serigraphy
    • H01C17/06506—Precursor compositions therefor, e.g. pastes, inks, glass frits
    • H01C17/06513—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component
    • H01C17/06533—Precursor compositions therefor, e.g. pastes, inks, glass frits characterised by the resistive component composed of oxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Non-Adjustable Resistors (AREA)

Abstract

579,735. Wire resistances. EXPRESS LIFT CO., Ltd., PARTRIDGE, J. H., and WELLS, L. E. W. July 3, 1942, No. 9200. [Class 37] [Also in Group XXIII] Resistance wire wound on a ceramic body is covered with vitreous enamel which binds it to the ceramic and has a coefficient of expansion somewhat less than that of the ceramic so that at room temperature the enamel is mostly or wholly in compression. The enamel used should not require for its application to the wire-wound ceramic body a temperature higher than 1000‹C. A suitable enamel comprises 40 to 55 per cent. of silica, 25 to 35 per cent. of boric oxide, not more than 6 per cent. of sodium or potassium oxide, and from 10 to 15 per cent. of barium oxide, strontium oxide, zinc oxide, titanium oxide, lead oxide, and fluorine. Small quantities of other substances such as arsenic oxide or nickel or cobalt oxides may be added. The solid powdered enamel is applied in stages to the ceramic made hot enough to melt the enamel when it comes into contact with it, the progress of the enamelling being continually observed. After the enamel has been applied to the wire-wound ceramic body the surface may be cooled by forcing a strong current of air over the surface of the enamel, so that when the enamel sets the temperature of the ceramic body is considerably greater than that of the enamel.
GB920042A 1942-07-03 1942-07-03 Improvements in electrical resistors comprising a ceramic support and wire wound thereon Expired GB579735A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB920042A GB579735A (en) 1942-07-03 1942-07-03 Improvements in electrical resistors comprising a ceramic support and wire wound thereon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB920042A GB579735A (en) 1942-07-03 1942-07-03 Improvements in electrical resistors comprising a ceramic support and wire wound thereon

Publications (1)

Publication Number Publication Date
GB579735A true GB579735A (en) 1946-08-14

Family

ID=9867332

Family Applications (1)

Application Number Title Priority Date Filing Date
GB920042A Expired GB579735A (en) 1942-07-03 1942-07-03 Improvements in electrical resistors comprising a ceramic support and wire wound thereon

Country Status (1)

Country Link
GB (1) GB579735A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918380C (en) * 1949-09-12 1954-09-23 Dubilier Condenser Co 1925 Ltd dielectric
US3248679A (en) * 1962-12-11 1966-04-26 Ward Leonard Electric Co Metal alloy resistors
US3248680A (en) * 1962-12-11 1966-04-26 Ward Leonard Electric Co Resistor
US3370262A (en) * 1963-05-27 1968-02-20 Sprague Electric Co Electrical resistor
EP0059006A1 (en) * 1981-02-19 1982-09-01 Koninklijke Philips Electronics N.V. Wire-wound resistor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918380C (en) * 1949-09-12 1954-09-23 Dubilier Condenser Co 1925 Ltd dielectric
US3248679A (en) * 1962-12-11 1966-04-26 Ward Leonard Electric Co Metal alloy resistors
US3248680A (en) * 1962-12-11 1966-04-26 Ward Leonard Electric Co Resistor
US3370262A (en) * 1963-05-27 1968-02-20 Sprague Electric Co Electrical resistor
EP0059006A1 (en) * 1981-02-19 1982-09-01 Koninklijke Philips Electronics N.V. Wire-wound resistor

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